Re: AMD will transition Ryzen and Vega to GloFo 12nm LP next year

Yea LP and LPP means low power and low power plus, the thing is i don't have a clue what makes them low power versus other types of FinFET's, is it the way they're designed, the material that goes into them, or something else.

Re: AMD will transition Ryzen and Vega to GloFo 12nm LP next year

Originally Posted by Corky34

*Normal as in what Intel uses.

I wouldn't call what Intel does "normal"

Intel's process is very good at producing fast CPU parts, but pretty bad at anything else, as shown by the lack of foundry customers they seem to currently have. Not being optimised for low power parts wouldn't be a problem for Intel if it wasn't for their wafers being reported as way more expensive.

Originally Posted by Corky34

is it the way they're designed, the material that goes into them, or something else.

Re: AMD will transition Ryzen and Vega to GloFo 12nm LP next year

Originally Posted by Corky34

Yea LP and LPP means low power and low power plus, the thing is i don't have a clue what makes them low power versus other types of FinFET's, is it the way they're designed, the material that goes into them, or something else.

leading performance https://www.globalfoundries.com/news-events/press-releases/globalfoundries-introduces-new-12nm-finfet-technology-for-high-performance-applications

Re: AMD will transition Ryzen and Vega to GloFo 12nm LP next year

Originally Posted by DanceswithUnix

... So, if a Ryzen can go 10% faster, does that make much difference to benchmark tables.

Looking at the Ryzen 5 review, not really. The difference in ST performance between Ryzen and Kaby Lake is much bigger than that, and Ryzen is already a better value proposition in MT. The difference is marginal, and doesn't change the overall picture - i.e. Intel is still well ahead in ST workloads but Ryzen is better for MT workloads.

Re: AMD will transition Ryzen and Vega to GloFo 12nm LP next year

Originally Posted by Platinum

Not sure it makes any difference, my understanding is LP stands for Low power, I could be wrong though

Yea LP and LPP means low power and low power plus, the thing is i don't have a clue what makes them low power versus other types of FinFET's, is it the way they're designed, the material that goes into them, or something else.

Actually, 12nm LP process that AMD will switch to for Ryzen+ and Vega refresh next year apparently is NOT low power.
There are differences between the nodes it would seem as this process is based more on the process that IBM is working on (7nm) which would technically allow a CPU to run at 5GhZ and the one that AMD will be using from GloFo for Ryzen 2 (however, for Vega or Navi at 7nm, it seems that AMD is looking into TSMC as Glofo process is not particularly suited for higher clock speeds - not sure how the 7nm process might work for GPU's, but it could easily be different for CPU's - GPU's might end up with lower quality yields if done on Glofo process, and due to some issues AMD experienced in this exact department, they seem to looking to TSMC for their GPU's on 7nm).

AMD's main issue right now in terms of power consumption for Vega is rooted in too high Voltages and possibly core clocks.
The manuf. process is not suited for high clock speeds, and AMD sets too high voltages to increase yields.
Undervolting Vega 56 managed to drop power consumption to just at or lower than 1070 levels which also allowed Vega 56 to reach and maintain its advertised boost clocks (otherwise it would throttle and guzzle down much more power than it needs), and surpass 1070 easily in performance.

Similar thing happened with Vega 64, but because 64 is clocked at higher core settings, it seems to be putting more strain on power consumption.

It was also noted that Vega usually benefits more from HBM overclocking as it seems to be bandwidth starved... and also overclocking the HBM also resulted in minimal increas in power consumption (about 5W increase for every 100-150MhZ).

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Re: AMD will transition Ryzen and Vega to GloFo 12nm LP next year

Yea they increased the voltage of Vega quiet a way past its peak efficiency, who knows whether that's for yields or performance, my guess is yields as the increased voltage didn't net them a big gain in performance.

I'd still love to know how LP and LPP differ structurally, i guess that sort of info isn't something they want to talk about though as things like gate sizes, drains, sources, and other structural differences isn't something you want your competitors to know.